- 4th
- 10:41 pm: 23 + 61 = great score
- 24th
- 05:25 pm: US Sudoku Championship - 8 comments
- 25th
- 09:29 am: Today's Nikoli Championship Puzzle - 10 comments
- 27th
- 11:16 am: The Art of Sudoku - 12 comments
The Art of Puzzles - May 2007
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